Hi,

with the following group of data
1 2 3 4
a 10 10 30 5
b 30 5 32 42
c 10 12 15 28

I want to have a graph with 2 column s for each letter, one with the value
of column 1 and another one with the sum of columns 2, 3 & 4 with different
color for each value.
I've seen that is possible in some built in graph but not sure how to make it

Thanks
--
Alvaro